Across
1
Tissue that contracts for movement
3
Naturally occurring inorganic solid
5
Ball of burning gas in space
7
Force that attracts objects together
8
Disturbance that transfers energy
Down
1
The Red Planet
2
Unit of electric potential
4
Icy body with a tail near the sun
6
Infectious microscopic agent
9
Amplified beam of light
10
Nerve cell in the brain